expand datajob to deploy ecs fargate tasks

- can we subclass from `DataJobBase` and implement the requirements for an ecs fargate task/job?
- maybe name it FargateJob ? (job is consistent within the lib, but i think task is the correct term for ecs/fargate)
- can we add ecs fargate job to stepfunctions workflow?
- add test to create a class FargateJob
- add example to synth a job with fargate in github actions